In a condition known as sunstroke, the victim appears flushed, the skin is warm and dry, and the body temperature rises dramatically. Explain these observations based on what you know concerning the role of the skin in thermoregulation
When the body temperature increases, more blood flow is directed to the vessels of the skin. The red cells in the blood give the skin a redder-than-usual color and account for the victim's flushed appearance. The skin is dry because the sweat glands are not producing sweat (avoiding further dehydration). Without evaporation cooling, not enough heat is dissipated from the skin, the skin is warm, and the body temperature rises. This situation represents positive feedback operating in a disease state.
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